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| author | Weilin Wang <weilin.wang@intel.com> | 2024-07-20 02:20:59 -0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2024-08-13 15:25:32 -0300 |
| commit | d546e3acf3526eaf1d74902236c7219a424ac2e9 (patch) | |
| tree | 320c736e3540bebadfc33ece99ed2b7ec62a87cb /tools/perf/builtin-stat.c | |
| parent | 0a7381601b8a55d44c97ea132e23876c0dd9f90e (diff) | |
| download | linux-d546e3acf3526eaf1d74902236c7219a424ac2e9.tar.gz linux-d546e3acf3526eaf1d74902236c7219a424ac2e9.tar.bz2 linux-d546e3acf3526eaf1d74902236c7219a424ac2e9.zip | |
perf stat: Add command line option for enabling TPEBS recording
With this command line option, TPEBS recording is turned off in 'perf
stat' on default. It will only be turned on when this option is given in
'perf stat' command.
Example with --record-tpebs:
perf stat -M tma_split_loads -C1-4 --record-tpebs sleep 1
[ perf record: Woken up 2 times to write data ]
[ perf record: Captured and wrote 0.044 MB - ]
Performance counter stats for 'CPU(s) 1-4':
53,259,156,071 cpu_core/TOPDOWN.SLOTS/ # 1.6 % tma_split_loads (50.00%)
15,867,565,250 cpu_core/topdown-retiring/ (50.00%)
15,655,580,731 cpu_core/topdown-mem-bound/ (50.00%)
11,738,022,218 cpu_core/topdown-bad-spec/ (50.00%)
6,151,265,424 cpu_core/topdown-fe-bound/ (50.00%)
20,445,917,581 cpu_core/topdown-be-bound/ (50.00%)
6,925,098,013 cpu_core/L1D_PEND_MISS.PENDING/ (50.00%)
3,838,653,421 cpu_core/MEMORY_ACTIVITY.STALLS_L1D_MISS/ (50.00%)
4,797,059,783 cpu_core/EXE_ACTIVITY.BOUND_ON_LOADS/ (50.00%)
11,931,916,714 cpu_core/CPU_CLK_UNHALTED.THREAD/ (50.00%)
102,576,164 cpu_core/MEM_LOAD_COMPLETED.L1_MISS_ANY/ (50.00%)
64,071,854 cpu_core/MEM_INST_RETIRED.SPLIT_LOADS/ (50.00%)
3 cpu_core/MEM_INST_RETIRED.SPLIT_LOADS/R
1.003049679 seconds time elapsed
Example without --record-tpebs:
perf stat -M tma_contested_accesses -C1 sleep 1
Performance counter stats for 'CPU(s) 1':
50,203,891 cpu_core/TOPDOWN.SLOTS/ # 0.0 % tma_contested_accesses (63.60%)
10,040,777 cpu_core/topdown-retiring/ (63.60%)
6,890,729 cpu_core/topdown-mem-bound/ (63.60%)
2,756,463 cpu_core/topdown-bad-spec/ (63.60%)
10,828,288 cpu_core/topdown-fe-bound/ (63.60%)
28,350,432 cpu_core/topdown-be-bound/ (63.60%)
98 cpu_core/OCR.DEMAND_DATA_RD.L3_HIT.SNOOP_HITM/ (63.70%)
577,520 cpu_core/MEMORY_ACTIVITY.STALLS_L2_MISS/ (54.62%)
313,339 cpu_core/MEMORY_ACTIVITY.STALLS_L3_MISS/ (54.62%)
14,155 cpu_core/MEM_LOAD_RETIRED.L1_MISS/ (45.54%)
0 cpu_core/OCR.DEMAND_DATA_RD.L3_HIT.SNOOP_HIT_WITH_FWD/ (36.30%)
8,468,077 cpu_core/CPU_CLK_UNHALTED.THREAD/ (45.38%)
198 cpu_core/MEM_LOAD_L3_HIT_RETIRED.XSNP_MISS/ (45.38%)
8,324 cpu_core/MEM_LOAD_RETIRED.FB_HIT/ (45.38%)
3,388,031,520 TSC
23,226,785 cpu_core/CPU_CLK_UNHALTED.REF_TSC/ (54.46%)
80 cpu_core/MEM_LOAD_L3_HIT_RETIRED.XSNP_FWD/ (54.46%)
0 cpu_core/MEM_LOAD_L3_HIT_RETIRED.XSNP_FWD/R
0 cpu_core/MEM_LOAD_L3_HIT_RETIRED.XSNP_MISS/R
1,006,816,667 ns duration_time
1.002537737 seconds time elapsed
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Weilin Wang <weilin.wang@intel.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Link: https://lore.kernel.org/r/20240720062102.444578-7-weilin.wang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-stat.c')
| -rw-r--r-- | tools/perf/builtin-stat.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 6162b98fc941..cf985cdb9a6e 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -2475,6 +2475,10 @@ int cmd_stat(int argc, const char **argv) "disable adding events for the metric threshold calculation"), OPT_BOOLEAN(0, "topdown", &topdown_run, "measure top-down statistics"), +#ifdef HAVE_ARCH_X86_64_SUPPORT + OPT_BOOLEAN(0, "record-tpebs", &tpebs_recording, + "enable recording for tpebs when retire_latency required"), +#endif OPT_UINTEGER(0, "td-level", &stat_config.topdown_level, "Set the metrics level for the top-down statistics (0: max level)"), OPT_BOOLEAN(0, "smi-cost", &smi_cost, |